DP: native wxTreeCtrl for GTK.

It *should* be buggy... Cause I do not know GTK... But it works... I do not know why... Robert, please look at it... I am not sure that it is ok... git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@495 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
1998-08-10 17:53:44 +00:00
parent 9c331ded69
commit f4e325b3df
9 changed files with 2064 additions and 5 deletions
--- a/src/gtk/treectrl.cpp
+++ b/src/gtk/treectrl.cpp
@@ -0,0 +1,696 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        treectrl.cpp
+// Purpose:
+// Author:      Denis Pershin
+// Created:     07/05/98
+// Id:          $Id$
+// Copyright:   (c) 1998 Denis Pershin and Julian Smart
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#ifdef __GNUG__
+#pragma implementation "treectrlgtk.h"
+#endif
+
+#include "wx/gtk/treectrl.h"
+#include "wx/settings.h"
+#include "wx/log.h"
+
+#ifdef USE_GDK_IMLIB
+#include "../gdk_imlib/gdk_imlib.h"
+#endif
+
+//-----------------------------------------------------------------------------
+// wxTreeItem
+//-----------------------------------------------------------------------------
+
+// clicked
+
+void gtk_treeitem_expand_callback(GtkWidget *WXUNUSED(widget), wxTreeItem *treeitem) {
+  treeitem->SendExpanding(treeitem->m_owner);
+  treeitem->SendExpand(treeitem->m_owner);
+};
+
+void gtk_treeitem_collapse_callback( GtkWidget *WXUNUSED(widget), wxTreeItem *treeitem) {
+  treeitem->SendCollapsing(treeitem->m_owner);
+  treeitem->SendCollapse(treeitem->m_owner);
+};
+
+void gtk_treeitem_select_callback( GtkWidget *WXUNUSED(widget), wxTreeItem *treeitem) {
+  treeitem->SendSelChanging(treeitem->m_owner);
+  treeitem->m_state |= wxTREE_STATE_SELECTED;
+  treeitem->SendSelChanged(treeitem->m_owner);
+}
+
+void gtk_treeitem_deselect_callback( GtkWidget *WXUNUSED(widget), wxTreeItem *treeitem) {
+  treeitem->SendSelChanging(treeitem->m_owner);
+  treeitem->m_state &= !wxTREE_STATE_SELECTED;
+  treeitem->SendSelChanged(treeitem->m_owner);
+}
+
+IMPLEMENT_DYNAMIC_CLASS(wxTreeItem, wxObject)
+
+wxTreeItem::wxTreeItem() {
+  m_mask = 0;
+  m_itemId = 0;
+  m_state = 0;
+  m_stateMask = 0;
+  m_image = -1;
+  m_children = 0;
+  m_selectedImage = -1;
+  m_tree = NULL;
+  m_parentwidget = NULL;
+  m_widget = NULL;
+  m_data = 0;
+  m_owner = 0;
+  expand_handler = 0;
+  collapse_handler = 0;
+};
+
+wxTreeItem::wxTreeItem(GtkWidget *parent, const wxTreeItem &item) {
+  m_mask = item.m_mask;
+  m_text = item.m_text;
+  m_itemId = item.m_itemId;
+  m_state = item.m_state;
+  m_stateMask = item.m_stateMask;
+  m_image = item.m_image;
+  m_tree = NULL;
+  m_owner = 0;
+  m_selectedImage = item.m_selectedImage;
+  m_children = item.m_children;
+  m_childlist = item.m_childlist;
+  m_data = item.m_data;
+  m_parentwidget = parent;
+  expand_handler = 0;
+  collapse_handler = 0;
+
+  Create();
+}
+
+void wxTreeItem::Create() {
+  wxASSERT(m_parentwidget != NULL);
+
+  m_widget = GTK_TREE_ITEM(gtk_tree_item_new_with_label ((char *)(const char *)m_text));
+  gtk_container_add (GTK_CONTAINER(m_parentwidget), GTK_WIDGET(m_widget));
+  gtk_widget_show(GTK_WIDGET(m_widget));
+
+  gtk_signal_connect(GTK_OBJECT(m_widget), "select",
+      GTK_SIGNAL_FUNC(gtk_treeitem_select_callback), (gpointer)this );
+
+  gtk_signal_connect(GTK_OBJECT(m_widget), "deselect",
+      GTK_SIGNAL_FUNC(gtk_treeitem_deselect_callback), (gpointer)this );
+
+  if ((m_mask & wxTREE_MASK_CHILDREN) != 0)
+    AddSubtree();
+}
+
+wxTreeItem::~wxTreeItem() {
+  if (m_owner != NULL)
+    SendDelete(m_owner);
+  DeleteChildren();
+  if ((m_widget != NULL) && (m_parentwidget != NULL))
+    gtk_container_remove(GTK_CONTAINER(m_parentwidget),
+                         GTK_WIDGET(m_widget));
+//  if (m_tree != NULL) {
+//    gtk_widget_destroy(GTK_WIDGET(m_tree));
+//    m_tree = NULL;
+//  }
+    
+//  if (m_widget != NULL)
+//    gtk_widget_destroy(GTK_WIDGET(m_widget));
+}
+
+void wxTreeItem::AddSubtree() {
+  if (m_widget == NULL)
+    return;
+
+  m_tree = GTK_TREE(gtk_tree_new());
+   
+  if (expand_handler == 0)
+    expand_handler = gtk_signal_connect(GTK_OBJECT(m_widget), "expand",
+      GTK_SIGNAL_FUNC(gtk_treeitem_expand_callback), (gpointer)this );
+
+  if (collapse_handler == 0)
+    collapse_handler = gtk_signal_connect( GTK_OBJECT(m_widget), "collapse",
+      GTK_SIGNAL_FUNC(gtk_treeitem_collapse_callback), (gpointer)this );
+
+  gtk_tree_item_set_subtree(GTK_TREE_ITEM(m_widget), GTK_WIDGET(m_tree));
+  gtk_widget_show(GTK_WIDGET(m_tree));
+}
+
+void wxTreeItem::AddChild(wxTreeItem *child) {
+  wxASSERT(child != NULL);
+
+  m_childlist.Append(child);
+}
+
+bool wxTreeItem::HasChildren() {
+  return (m_childlist.Number() != 0);
+}
+
+void wxTreeItem::DeleteChildren() {
+  wxTreeItem *item;
+  long no = GetChildrenNumber();
+  for (long i=0; i<no; i++)
+    if ((item = GetChild(i)) != 0)
+      delete item;
+  m_childlist.Clear();
+  m_tree = NULL;
+  
+  if ((m_mask & wxTREE_MASK_CHILDREN) != 0)
+    if (m_widget != NULL)
+      if (m_widget->subtree == 0)
+        AddSubtree();
+}
+
+int wxTreeItem::NumberOfVisibleDescendents() {
+  wxTreeItem *item;
+  long no = GetChildrenNumber();
+  long num = 0;
+  for (long i=0; i<no; i++)
+    if ((item = GetChild(i)) != 0)
+      num += item->NumberOfVisibleDescendents();
+  
+  num+=no;
+
+  return num;
+}
+
+wxTreeItem *wxTreeItem::FindItem(long itemId) const {
+  if (m_itemId == itemId) return (wxTreeItem*)(this);
+  wxNode *node = m_childlist.First();
+  while (node) {
+    wxTreeItem *item = (wxTreeItem*)node->Data();
+    wxTreeItem *res = item->FindItem( itemId );
+    if (res) return (wxTreeItem*)(res);
+    node = node->Next();
+  };
+  return NULL;
+};
+
+wxTreeItem *wxTreeItem::FindItem(GtkTreeItem *item) const {
+  if (m_widget == item)
+    return (wxTreeItem*)(this);
+  wxNode *node = m_childlist.First();
+  while (node) {
+    wxTreeItem *i = (wxTreeItem*)node->Data();
+    wxTreeItem *res = i->FindItem(item);
+    if (res) return (wxTreeItem*)(res);
+    node = node->Next();
+  };
+  return NULL;
+};
+
+void wxTreeItem::PrepareEvent(wxTreeEvent &event) {
+  event.m_item.m_itemId = m_itemId;
+  event.m_item.m_state = m_state;
+  event.m_item.m_text = m_text;
+  event.m_item.m_image = m_image;
+  event.m_item.m_selectedImage = m_selectedImage;
+  event.m_item.m_children = (GetChildrenNumber() > 0);
+  event.m_item.m_data = m_data;
+  event.m_oldItem = 0;
+  event.m_code = 0;
+//  event.m_pointDrag.x = 0;
+//  event.m_pointDrag.y = 0;
+};
+
+void wxTreeItem::SendDelete(wxWindow *target) {
+  wxTreeEvent event(wxEVT_COMMAND_TREE_DELETE_ITEM, target->GetId());
+  PrepareEvent(event);
+  event.SetEventObject(target);
+  target->ProcessEvent(event);
+};
+
+void wxTreeItem::SendExpand(wxWindow *target) {
+  wxTreeEvent event(wxEVT_COMMAND_TREE_ITEM_EXPANDED, target->GetId());
+  PrepareEvent(event);
+  event.SetEventObject(target);
+  target->ProcessEvent(event);
+};
+
+void wxTreeItem::SendExpanding(wxWindow *target) {
+  wxTreeEvent event(wxEVT_COMMAND_TREE_ITEM_EXPANDING, target->GetId());
+  PrepareEvent(event);
+  event.SetEventObject(target);
+  target->ProcessEvent(event);
+};
+
+void wxTreeItem::SendCollapse(wxWindow *target) {
+  wxTreeEvent event(wxEVT_COMMAND_TREE_ITEM_COLLAPSED, target->GetId());
+  PrepareEvent(event);
+  event.SetEventObject(target);
+  target->ProcessEvent(event);
+};
+
+void wxTreeItem::SendCollapsing(wxWindow *target) {
+  wxTreeEvent event(wxEVT_COMMAND_TREE_ITEM_COLLAPSING, target->GetId());
+  PrepareEvent(event);
+  event.SetEventObject(target);
+  target->ProcessEvent(event);
+};
+
+void wxTreeItem::SendSelChanged(wxWindow *target) {
+  wxTreeEvent event(wxEVT_COMMAND_TREE_SEL_CHANGED, target->GetId());
+  PrepareEvent(event);
+  event.SetEventObject(target);
+  target->ProcessEvent(event);
+};
+
+void wxTreeItem::SendSelChanging(wxWindow *target) {
+  wxTreeEvent event(wxEVT_COMMAND_TREE_SEL_CHANGING, target->GetId());
+  PrepareEvent(event);
+  event.SetEventObject(target);
+  target->ProcessEvent(event);
+};
+
+//-----------------------------------------------------------------------------
+// wxTreeCtrl
+//-----------------------------------------------------------------------------
+
+IMPLEMENT_DYNAMIC_CLASS(wxTreeCtrl, wxScrolledWindow)
+
+wxTreeCtrl::wxTreeCtrl() {
+  m_current = NULL;
+  m_lastId = 0;
+  m_isCreated = FALSE;
+  m_imageList = NULL;
+  m_smallImageList = NULL;
+};
+
+wxTreeCtrl::wxTreeCtrl(wxWindow *parent, wxWindowID id,
+            const wxPoint& pos, const wxSize& size,
+            long style, const wxString& name ) {
+  m_current = NULL;
+  m_lastId = 0;
+  m_isCreated = FALSE;
+  m_imageList = NULL;
+  m_smallImageList = NULL;
+  Create( parent, id, pos, size, style, name );
+};
+
+wxTreeCtrl::~wxTreeCtrl() {
+  DeleteAllItems();
+};
+
+bool wxTreeCtrl::Create(wxWindow *parent, wxWindowID id,
+            const wxPoint& pos, const wxSize& size,
+            long style, const wxString& name ) {
+  m_needParent = TRUE;
+  
+  PreCreation( parent, id, pos, size, style, name );
+    
+  m_widget = gtk_scrolled_window_new(NULL, NULL);
+  gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(m_widget),
+      GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
+	    
+  m_tree = GTK_TREE(gtk_tree_new());
+  
+/*
+  gtk_signal_connect( GTK_OBJECT(m_tree), "selection_changed",
+      GTK_SIGNAL_FUNC(gtk_treectrl_selection_changed_callback), (gpointer)this);
+  gtk_signal_connect( GTK_OBJECT(m_tree), "select_child",
+      GTK_SIGNAL_FUNC(gtk_treectrl_select_child_callback), (gpointer)this);
+  gtk_signal_connect( GTK_OBJECT(m_tree), "unselect_child",
+      GTK_SIGNAL_FUNC(gtk_treectrl_unselect_child_callback), (gpointer)this);
+*/
+
+  gtk_container_add(GTK_CONTAINER(m_widget), GTK_WIDGET(m_tree));
+  gtk_widget_show(GTK_WIDGET(m_tree));
+
+  PostCreation();
+
+  gtk_widget_realize(GTK_WIDGET(m_tree));
+  
+  Show(TRUE);
+
+  return TRUE;
+};
+
+int wxTreeCtrl::GetCount() const
+{
+  if (!m_anchor) return 0;
+  return m_anchor->NumberOfVisibleDescendents();
+};
+
+long wxTreeCtrl::InsertItem(long parent, const wxString& label, long data,
+      int image, int selImage, long insertAfter) {
+  wxTreeItem item;
+  item.m_data = data;
+  if (!label.IsNull() || (label == "")) {
+    item.m_text = label;
+    item.m_mask |= wxTREE_MASK_TEXT;
+  };
+
+  if (image >= 0) {
+    item.m_image = image;
+    item.m_mask |= wxTREE_MASK_IMAGE;
+  };
+
+  if (selImage >= 0) {
+    item.m_selectedImage = selImage;
+    item.m_mask |= wxTREE_MASK_SELECTED_IMAGE;
+  };
+
+  return InsertItem(parent, item, insertAfter);
+};
+
+long wxTreeCtrl::InsertItem( long parent, wxTreeItem &info, long WXUNUSED(insertAfter) ) {
+  int oldMask = info.m_mask;
+  long ret = 0;
+  wxTreeItem *p = NULL;
+  wxTreeItem *new_child;
+
+  if (parent == 0) {
+    if (m_anchor)
+      return -1;
+  } else {
+    p = FindItem(parent);
+    if (!p) return -1;
+  };
+
+  if ((info.m_mask & wxTREE_MASK_HANDLE) == 0) {
+    m_lastId++;
+    info.m_itemId = m_lastId;
+    info.m_mask |= wxTREE_MASK_HANDLE;
+    ret = m_lastId;
+  } else
+    ret = info.m_itemId;
+
+  if (p) {
+    if (p->m_tree == NULL)
+      p->AddSubtree();
+  
+    new_child = new wxTreeItem(GTK_WIDGET(p->m_tree), info);
+    p->AddChild(new_child);
+  } else {
+    new_child = new wxTreeItem(GTK_WIDGET(m_tree), info);
+    m_anchor = new_child;
+  }
+
+/* Disabled until wxImageList q solved
+  if ((info.m_mask & wxTREE_MASK_IMAGE) == 0) {
+    wxBitmap *bmp;
+
+    if ((bmp = m_imageList->GetItem(info.m_image))->Ok()) {
+      GdkBitmap *mask = NULL;
+      if (bmp->GetMask()) mask = bmp->GetMask()->GetBitmap();
+      GtkWidget *pixmap = gtk_pixmap_new( bmp->GetPixmap(), mask );
+
+      gtk_widget_set_parent(pixmap, GTK_WIDGET(new_child->m_widget));
+      gtk_widget_show(pixmap);
+      GTK_TREE_ITEM(new_child->m_widget)->pixmaps_box = pixmap;
+    }
+  }
+*/
+
+  new_child->m_owner = this;
+
+  info.m_mask = oldMask;
+  return ret;
+};
+
+
+bool wxTreeCtrl::ExpandItem( long item, int action ) {
+  wxTreeItem *i = FindItem( item );
+  if (!i)
+    return FALSE;
+
+  switch (action) {
+    case wxTREE_EXPAND_EXPAND:
+      gtk_tree_item_expand(GTK_TREE_ITEM(i->m_widget));
+      break;
+
+    case wxTREE_EXPAND_COLLAPSE_RESET:
+    case wxTREE_EXPAND_COLLAPSE:
+      gtk_tree_item_collapse(GTK_TREE_ITEM(i->m_widget));
+      break;
+
+    case wxTREE_EXPAND_TOGGLE:
+      if ((i->GetState() & wxTREE_STATE_EXPANDED) == 0)
+        gtk_tree_item_expand(GTK_TREE_ITEM(i->m_widget));
+      else
+        gtk_tree_item_collapse(GTK_TREE_ITEM(i->m_widget));
+      break;
+  }
+
+  return TRUE;
+};
+
+void wxTreeCtrl::DeleteItem( long item )
+{
+  wxTreeItem *pItem = FindItem( item );
+  wxCHECK_RET( pItem != NULL, "wxTreeCtrl::DeleteItem: no such pItem." );
+
+//  pItem->m_parent->m_childlist.DeleteObject(pItem);
+}
+
+void wxTreeCtrl::DeleteChildren( long item )
+{
+  wxTreeItem *pItem = FindItem( item );
+  wxCHECK_RET( pItem != NULL, "wxTreeCtrl::DeleteChildren: no such pItem." );
+
+  pItem->DeleteChildren();
+}
+
+bool wxTreeCtrl::DeleteAllItems()
+{
+  delete m_anchor;
+  m_anchor = NULL;
+  return TRUE;
+};
+
+/*
+bool wxTreeCtrl::GetItem( wxTreeItem &info ) const
+{
+  wxTreeItem *i = FindItem( info.m_itemId );
+  if (!i) return FALSE;
+  i->GetItem( info );
+  return TRUE;
+};
+*/
+
+long wxTreeCtrl::GetItemData( long item ) const
+{
+  wxTreeItem *i = FindItem( item );
+  if (!i) return 0;
+  return i->m_data;
+};
+
+wxString wxTreeCtrl::GetItemText( long item ) const
+{
+  wxTreeItem *i = FindItem( item );
+  if (!i) return "";
+  return i->m_text;
+};
+
+int wxTreeCtrl::GetItemImage(long item) const
+{
+  wxTreeItem *i = FindItem( item );
+  return i == 0 ? -1 : i->GetImage();
+}
+
+long wxTreeCtrl::GetParent( long item ) const
+{
+  wxTreeItem *i = FindItem( item );
+  if (!i) return -1;
+/*
+  i = i->m_parent;
+  if (!i) return -1;
+  return i->m_parent->m_itemId;
+*/
+  return -1;
+};
+
+long wxTreeCtrl::GetRootItem() const
+{
+  if (m_anchor) return m_anchor->m_itemId;
+  return -1;
+};
+
+/*
+long wxTreeCtrl::GetSelection() const
+{
+  return m_current ? m_current->GetItemId() : -1;
+};
+
+bool wxTreeCtrl::SelectItem(long itemId)
+{
+  wxTreeItem *pItem = FindItem(itemId);
+  if ( !pItem ) {
+    wxLogDebug("Can't select an item %d which doesn't exist.", itemId);
+
+    return FALSE;
+  }
+
+  SelectItem(pItem);
+
+  return TRUE;
+};
+
+void wxTreeCtrl::SelectItem(wxTreeItem *item, bool bDoEvents )
+{
+  if (m_current != item)
+  {
+    if (m_current)
+    {
+      m_current->SetHilight( FALSE );
+//      RefreshLine( m_current );
+    };
+    m_current = item;
+    m_current->SetHilight( TRUE );
+//    RefreshLine( m_current );
+
+    if (bDoEvents) m_current->SendSelected( this );
+  }
+}
+*/
+
+bool wxTreeCtrl::ItemHasChildren( long item ) const
+{
+  wxTreeItem *i = FindItem( item );
+  if (!i) return FALSE;
+  return i->HasChildren();
+};
+
+void wxTreeCtrl::SetIndent( int indent )
+{
+  m_indent = indent;
+  Refresh();
+};
+
+int wxTreeCtrl::GetIndent() const
+{
+  return m_indent;
+};
+
+/*
+bool wxTreeCtrl::SetItem( wxTreeItem &info )
+{
+  wxTreeItem *i = FindItem( info.m_itemId );
+  if (!i) return FALSE;
+  wxClientDC dc(this);
+  i->SetItem( info, &dc );
+  Refresh();
+  return TRUE;
+};
+
+bool wxTreeCtrl::SetItemData( long item, long data )
+{
+  wxTreeItem *i = FindItem( item );
+  if (!i) return FALSE;
+  i->m_data = data;
+  return TRUE;
+};
+
+bool wxTreeCtrl::SetItemText( long item, const wxString &text )
+{
+  wxTreeItem *i = FindItem( item );
+  if (!i) return FALSE;
+  wxClientDC dc(this);
+  i->SetText( text, &dc );
+  return TRUE;
+};
+
+void wxTreeCtrl::SetItemImage(long item, int image, int imageSel) const
+{
+  wxTreeItem *i = FindItem( item );
+  if ( i != 0 ) {
+    i->SetImage(image);
+    i->SetSelectedImage(imageSel);
+  }
+}
+
+long wxTreeCtrl::HitTest( const wxPoint& point, int &flags )
+{
+  flags = 0;
+  if (!m_anchor) return -1;
+  return m_anchor->HitTest( point, flags );
+};
+*/
+
+wxImageList *wxTreeCtrl::GetImageList( int which ) const
+{
+  if (which == wxIMAGE_LIST_NORMAL) return m_imageList;
+  return m_smallImageList;
+};
+
+void wxTreeCtrl::SetImageList( wxImageList *imageList, int which )
+{
+  if (which == wxIMAGE_LIST_NORMAL)
+  {
+    if (m_imageList) delete m_imageList;
+    m_imageList = imageList;
+  }
+  else
+  {
+    if (m_smallImageList) delete m_smallImageList;
+    m_smallImageList = imageList;
+  };
+};
+
+wxTreeItem *wxTreeCtrl::FindItem( long itemId ) const {
+  if (!m_anchor) return NULL;
+  return m_anchor->FindItem( itemId );
+  return 0;
+};
+
+wxTreeItem *wxTreeCtrl::FindItem(GtkTreeItem *item) const {
+  if (!m_anchor) return NULL;
+  return m_anchor->FindItem(item);
+  return 0;
+};
+
+//-----------------------------------------------------------------------------
+// wxTreeEvent
+//-----------------------------------------------------------------------------
+
+IMPLEMENT_DYNAMIC_CLASS(wxTreeEvent,wxCommandEvent)
+
+wxTreeEvent::wxTreeEvent( wxEventType commandType, int id ) :
+  wxCommandEvent( commandType, id )
+{
+  m_code = 0;
+  m_oldItem = 0;
+};
+
+/* Bunch of old code might be useful */
+/*
+  wxBitmap *bmp;
+
+  if ((bmp = m_imageList->GetItem(0))->Ok()) {
+    GdkBitmap *mask = NULL;
+    if (bmp->GetMask()) mask = bmp->GetMask()->GetBitmap();
+    GtkWidget *pixmap = gtk_pixmap_new( bmp->GetPixmap(), mask );
+
+    gtk_widget_set_parent(pixmap, GTK_WIDGET(new_child->m_widget));
+    gtk_widget_show(pixmap);
+    GTK_TREE_ITEM(new_child->m_widget)->pixmaps_box = pixmap;
+  }
+
+  if ((bmp = m_imageList->GetItem(1))->Ok()) {
+    GdkBitmap *mask = NULL;
+    if (bmp->GetMask()) mask = bmp->GetMask()->GetBitmap();
+    GtkWidget *pixmap = gtk_pixmap_new( bmp->GetPixmap(), mask );
+
+    gtk_widget_set_parent(pixmap, GTK_WIDGET(new_child->m_widget));
+    gtk_widget_show(pixmap);
+    GTK_TREE_ITEM(new_child->m_widget)->plus_pix_widget = pixmap;
+  }
+
+  if ((bmp = m_imageList->GetItem(2))->Ok()) {
+    GdkBitmap *mask = NULL;
+    if (bmp->GetMask()) mask = bmp->GetMask()->GetBitmap();
+    GtkWidget *pixmap = gtk_pixmap_new( bmp->GetPixmap(), mask );
+
+    gtk_widget_set_parent(pixmap, GTK_WIDGET(new_child->m_widget));
+    gtk_widget_show(pixmap);
+    GTK_TREE_ITEM(new_child->m_widget)->minus_pix_widget = pixmap;
+  }
+
+  if (p)
+    if (p->m_childlist.Number() == 1) {
+      gtk_tree_item_collapse(GTK_TREE_ITEM(p->m_widget));
+      gtk_tree_item_expand(GTK_TREE_ITEM(p->m_widget));
+    }
+*/